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Scattering In The K=O Band Of Odd-Odd Deformed Nuclei

Description: A displacement of energy levels has been observed in the K=O band of odd-odd deformed nuclei. It is shown that this shift is due to a particular type of scattering in which the final state is obtained from the initial state by a rotation of 180'. This circumstance allows one to state certain selection rules on the parts of the n-p residual interaction responsible for the shift. The Wigner component of the force cannot contribute to the shift. In certain cases the contribution of all central for… more
Date: July 1961
Creator: Newby, Neal D., Jr.
Partner: UNT Libraries Government Documents Department
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Parametric analysis of Hanford speed of control criterion

Description: This report examines the many interrelated nuclear, physical, and mechanical phenomena and actions which take place following a loss-of-coolant accident in a Hanford reactor operating at equilibrium power.
Date: July 17, 1961
Creator: Nilson, R.; Tiller, R. E. & Peden, J. C.
Partner: UNT Libraries Government Documents Department
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Preparation of Uranium(IV) Nitrate Solutions

Description: A procedure was developed for the preparation of uranium(IV) nitrate solutions in dilute nitric acid. Zinc metal was used as a reducing agent for uranium(VI) in dilute sulfuric acid. The uranium(IV) was precipitated as the hydrated oxide and dissolved in nitric acid. Uranium(IV) nitrate solutions were prepared at a maximum concentration of 100 g/l. The uranium(VI) content was less than 2% of the uranium(IV). (auth)
Date: July 1, 1961
Creator: Ondrejcin, R. S.
Partner: UNT Libraries Government Documents Department
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Study of Factors Influencing Ductility of Iron-Aluminum Alloys. Monthly Letter Report No. 1, June 1, 1961-November 30, 1961

Description: Studies are being made on the effects of variation of aluminum content, heat treatment, surface preparation, and other metallurgical factors on the room temperature ductility of Al-- Fe alloys. The variation of Fe/sub 3/Al order as a function of temperature for 13.9 Alfenol was redetermined under constant instrumental conditions. The variation of the electrical resistivity of the three alloys under consideration with temperature on slow cooling is illustrated. An anomaly in the disordering proc… more
Date: July 10, 1961
Creator: Rauscher, G. P., Jr. & Nachman, J. F.
Partner: UNT Libraries Government Documents Department
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EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF ULTRASONIC VIBRATION ON BURNOUT HEAT FLUX WITH BOILING WATER. Final Summary Report, October 3, 1960-July 31, 1961

Description: Experimental results were obtained on the effect of an ultrasonic field on the burnout heat flux for water flowing at atmospheric pressure, through an annular flow channel formed by a 1/4-in.-diameter electrically heated tube and a concentric glass tube of 3/4-in. ID. The active length of the central heating element was 5 1/2 in. The ultrasonic transducer, which was operated at 25,000 cps and a maximum electrical input of 300 watts, was located at the inlet end of the flow channel. The ultrason… more
Date: July 31, 1961
Creator: Romie, F.E. & Aronson, C.A.
Partner: UNT Libraries Government Documents Department
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CURRENT STATUS OF THE AC IONIZATION CHAMBER

Description: ABS>The design concept of an a-c ionization chamber and its supporting electronics is described. Several designs are possible and the sensors can be tailored to specific requirements when necessary. Mode of operation, signal voltage development, and switching frequency are discussed. High-sensitivity operation is described. Requirements for high-temperature, power-level operation are outlined. (M.C.G.)
Date: July 1, 1961
Creator: Rusch, G.K.
Partner: UNT Libraries Government Documents Department
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Current-Switching Circuitry

Description: This paper discusses a group of high-speed switching circuits using the basic current-switching mode of operation. The first part of the paper presents a dynamic analysis of the basic current-switching mode and the second part is the dynamic and steady-state analysis of a current-switching flip-flop.
Date: July 17, 1961
Creator: Salvador, Jack Gilbert & Pederson, D. O.
Partner: UNT Libraries Government Documents Department
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A STUDY OF FISSION PRODUCT TRANSPORT MECHANISMS IN HIGH TEMPERATURE GAS- COOLED REACTOR FUEL ELEMENTS

Description: The experimental work on the diffusion of fission products in graphite matrices at high temperatures is reviewed and the possible mechanisms of mass transport are discussed. Preliminary data are given on diffusion in these systems. It is shown that the rates of diffusion for fission products introduced by a recoil process into the moderatcr lattice can be correlated based on a random wahk solid state diffusion model. An expression is derived for the coefficient of diffusion in terms of the latt… more
Date: July 13, 1961
Creator: Saunders, A.R.
Partner: UNT Libraries Government Documents Department
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DEVELOPMENT OF A PROCESS FOR SODIUM BONDING OF EBR-II FUEL AND BLANKET ELEMENTS

Description: Procedures for assembling EBR-II fuel elements with annular sodium bonds between the uranium rods and the stainless steel claddings are outlined. The results of several meltdown and uranium-settling experiments are given. Bonding experiments were performed: furnace bonding, submerged canning, ultrasonic bonding, centrifuging, pressure pulsing, and vibratory bonding. Vibratory bonding was chosen for the production of the first EBR-II core. (D.L.C.)
Date: July 1, 1961
Creator: Sowa, E.S. & Kimont, E.L.
Partner: UNT Libraries Government Documents Department
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THE LEAD-BISMUTH EUTECTIC

Description: Available information on the liquid lead-bismuth eutectic is reviewed. A compilation of physical, thermodynamic, and nuclear properties is included. Corrosion, corrosion inhibition, and handling of the eutectic are discussed. (R.J.S.)
Date: July 7, 1961
Creator: Stachura, S.J. & Burnet, G.
Partner: UNT Libraries Government Documents Department
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Summary of the Operational Status of Reactor Control Instrumentation, Report No. 2

Description: The purpose of this review is to report the operability status of the reactor control instrumentation. The status of the instruments was determined twice during the first six months of this year, April 1 and June 1. The information contained in this report is not intended to be a complete description of the control instruments, but only as they apply to reactor control. The assigned Pile Physicist at each reactor reported the status of instrumentation at his reactor. Chart I summarizes the oper… more
Date: July 10, 1961
Creator: Stewart, S. L.
Partner: UNT Libraries Government Documents Department
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RADIOISOTOPE AND RADIATION APPLICATIONS. Quarterly Progress Report

Description: The study of the formation mechanism of free radicals in polymeric materials was continued. Emphasis was placed on an examination of the effect of structural factors on the efficiency of free-radical site formation in acrylate polymers. Site measurements as a function of dose were made for polymethacrylamide and repeated for polymethacrylic acid. The volatile products from the irradiation of polyacrylic acid. polymethacrylic acid, poly-ter- butylmethacrylate. and polycyclohexyl methacrylate wer… more
Date: July 18, 1961
Creator: Sunderman, D.N. ed.
Partner: UNT Libraries Government Documents Department
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The RBU Reactor-Burnup Code: Formulation and Operation Procedures

Description: Report discussing the computer program RBU, which calculates the neutron, reactivity, and isotopic history of a nuclear reactor in such a way as to facilitate the predictions of fuel costs and reactor performance. This report documents RBU's various calculations and operating procedures.
Date: July 1961
Creator: Triplett, J. R.; Merrill, E. T. & Burr, J. R.
Partner: UNT Libraries Government Documents Department
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System of Automatic Processing and Indexing of Reports

Description: The rapidly increasing volume ot new data in scientific and technical fields demands faster and better ways to communicate the new information to those concerned. A working system. System of Automatic Processing and Indexing of Reports (SAPIR), for doing this is described. SAPIR makes use of the Keyword-in- Context Index principle, by which certain keywords, together with surrounding words that act as modifiers, are selected from the titles of the technical publications. These keywords with the… more
Date: July 12, 1961
Creator: Turner, L. D. & Kennedy, J. H.
Partner: UNT Libraries Government Documents Department
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THERMAL EXPANSION OF SNAP MATERIALS

Description: Thermal expansion characteristics were determined for fuel-moderator, reflector, cladding, and engineering erials within the SNAP-2 core vessel. Values were denined for AISI Type 347 stainless steel, Hastelloy N, Zr, ZrH, and zirconium --uranium hydrides, from room temperature to temperatures greater than 1300 deg F. Derived equations were calculated for these materials, using a least squares analysis. Thermal expansion coefficients for the temperature range of 77 to 1200 deg F are: 10.34 x 10/… more
Date: July 30, 1961
Creator: Watrous, J.D.
Partner: UNT Libraries Government Documents Department
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High Performance UO2 Program First Quarterly Progress Report: April-June 1961

Description: A better understanding of the maximum operating characteristics that can be achieved with the use of UO2 as a reactor fuel is the primary purpose of this program for Euratom and the Atomic Energy Commission. During this program work will be undertaken in two areas that have been of concern to the reactor core designer for a long time, viz. fission gas release and central melting in fuel rods.
Date: July 1, 1961
Creator: Weidenbaum, B
Partner: UNT Libraries Government Documents Department
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HIGH PERFORMANCE UO$sub 2$ PROGRAM. Quarterly Progress Report No. 1, April-June 1961

Description: The maximum operating characteristics that can be achieved with the use of UO/sub 2/ as a reactor fuel are being investigated. Fuel assemblies are being fabricated for measurement of fission gas pressure in UO/sub 2/-filled fuel rods. A pressurized-water loop in GETR is being designed. A heat transfer burnout study is in progress to establish the upper limit of heat flux for studies of central melting in a fuel rod and fuel-cladding interactions. (M.C.G.)
Date: July 1, 1961
Creator: Weidenbaum, B.
Partner: UNT Libraries Government Documents Department
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Improved Zirconium Alloys Quarterly Report: April - June 1961

Description: Quarterly report documenting progress on a project to determine an improved zirconium alloy for service in superheated water and steam. This report describes the results of approximately 75 compositions that were prepared prior, and presently are being arc-melted and fabricated into corrosion specimens, continuing the investigations of the effect of zirconium purity and heat treatment on corrosion and resistance.
Date: July 11, 1961
Creator: Weinstein, Daniel & Holtz, F. C.
Partner: UNT Libraries Government Documents Department
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